The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2009
Filed:
Dec. 05, 2003
Applicants:
Hirotaka Yasuda, Osaka, JP;
Hirotsugu Kusano, Osaka, JP;
Wataru Yamada, Osaka, JP;
Yoshiyuki Saito, Osaka, JP;
Shuzo Hirakushi, Osaka, JP;
Inventors:
Hirotaka Yasuda, Osaka, JP;
Hirotsugu Kusano, Osaka, JP;
Wataru Yamada, Osaka, JP;
Yoshiyuki Saito, Osaka, JP;
Shuzo Hirakushi, Osaka, JP;
Assignee:
Jtekt Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B62D 5/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
Deep groove ball bearings are used as bearings supporting both side portions of a worm. In the first bearing on the side of a motor, the curvature radius of a raceway groove in an inner ring or the curvature radius of a raceway groove in an outer ring are set to a specific numerical range with respect to the diameter of a ball.